# # 2010-01-10 OBN - Added check for I_S values after change of variable value # SET @start_global_value = @@global.sql_select_limit; SELECT @start_global_value; # # exists as global and session # select @@global.sql_select_limit; select @@session.sql_select_limit; show global variables like 'sql_select_limit'; show session variables like 'sql_select_limit'; select * from information_schema.global_variables where variable_name='sql_select_limit'; select * from information_schema.session_variables where variable_name='sql_select_limit'; # # show that it's writable # set global sql_select_limit=10; set session sql_select_limit=20; select @@global.sql_select_limit; select @@session.sql_select_limit; show global variables like 'sql_select_limit'; show session variables like 'sql_select_limit'; select * from information_schema.global_variables where variable_name='sql_select_limit'; select * from information_schema.session_variables where variable_name='sql_select_limit'; # # incorrect types # --error ER_WRONG_TYPE_FOR_VAR set global sql_select_limit=1.1; --error ER_WRONG_TYPE_FOR_VAR set global sql_select_limit=1e1; --error ER_WRONG_TYPE_FOR_VAR set global sql_select_limit="foo"; SET @@global.sql_select_limit = @start_global_value; SELECT @@global.sql_select_limit;